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ls: add support for -H
Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko
parent
86ffe5c15a
commit
982aa263a0
159
coreutils/ls.c
159
coreutils/ls.c
@ -32,7 +32,7 @@
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//usage:#define ls_trivial_usage
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//usage: "[-1AaCxd"
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//usage: IF_FEATURE_LS_FOLLOWLINKS("L")
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//usage: IF_FEATURE_LS_FOLLOWLINKS("LH")
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//usage: IF_FEATURE_LS_RECURSIVE("R")
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//usage: IF_FEATURE_LS_FILETYPES("Fp") "lins"
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//usage: IF_FEATURE_LS_TIMESTAMPS("e")
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@ -51,7 +51,8 @@
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//usage: "\n -x List by lines"
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//usage: "\n -d List directory entries instead of contents"
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//usage: IF_FEATURE_LS_FOLLOWLINKS(
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//usage: "\n -L List entries pointed to by symlinks"
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//usage: "\n -L Follow symlinks"
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//usage: "\n -H Follow symlinks on command line only"
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//usage: )
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//usage: IF_FEATURE_LS_RECURSIVE(
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//usage: "\n -R Recurse"
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@ -118,11 +119,11 @@
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enum {
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TERMINAL_WIDTH = 80, /* use 79 if terminal has linefold bug */
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/* what is the overall style of the listing */
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STYLE_COLUMNAR = 1 << 21, /* many records per line */
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STYLE_LONG = 2 << 21, /* one record per line, extended info */
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STYLE_SINGLE = 3 << 21, /* one record per line */
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STYLE_MASK = STYLE_SINGLE,
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SPLIT_DIR = 1,
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SPLIT_FILE = 0,
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SPLIT_SUBDIR = 2,
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/* Bits in all_fmt: */
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/* 51306 lrwxrwxrwx 1 root root 2 May 11 01:43 /bin/view -> vi* */
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/* what file information will be listed */
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@ -152,44 +153,41 @@ DISP_RECURSIVE = 1 << 19, /* show directory and everything below it */
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DISP_ROWS = 1 << 20, /* print across rows */
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DISP_MASK = ((DISP_ROWS << 1) - 1) & ~(DISP_DIRNAME - 1),
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/* how will the files be sorted (CONFIG_FEATURE_LS_SORTFILES) */
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SORT_FORWARD = 0, /* sort in reverse order */
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SORT_REVERSE = 1 << 27, /* sort in reverse order */
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SORT_NAME = 0, /* sort by file name */
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SORT_SIZE = 1 << 28, /* sort by file size */
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SORT_ATIME = 2 << 28, /* sort by last access time */
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SORT_CTIME = 3 << 28, /* sort by last change time */
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SORT_MTIME = 4 << 28, /* sort by last modification time */
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SORT_VERSION = 5 << 28, /* sort by version */
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SORT_EXT = 6 << 28, /* sort by file name extension */
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SORT_DIR = 7 << 28, /* sort by file or directory */
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SORT_MASK = (7 << 28) * ENABLE_FEATURE_LS_SORTFILES,
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/* what is the overall style of the listing */
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STYLE_COLUMNAR = 1 << 21, /* many records per line */
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STYLE_LONG = 2 << 21, /* one record per line, extended info */
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STYLE_SINGLE = 3 << 21, /* one record per line */
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STYLE_MASK = STYLE_SINGLE,
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/* which of the three times will be used */
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TIME_CHANGE = (1 << 23) * ENABLE_FEATURE_LS_TIMESTAMPS,
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TIME_ACCESS = (1 << 24) * ENABLE_FEATURE_LS_TIMESTAMPS,
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TIME_MASK = (3 << 23) * ENABLE_FEATURE_LS_TIMESTAMPS,
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FOLLOW_LINKS = (1 << 25) * ENABLE_FEATURE_LS_FOLLOWLINKS,
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/* how will the files be sorted (CONFIG_FEATURE_LS_SORTFILES) */
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SORT_REVERSE = 1 << 25,
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LS_DISP_HR = (1 << 26) * ENABLE_FEATURE_HUMAN_READABLE,
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SORT_NAME = 0, /* sort by file name */
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SORT_SIZE = 1 << 26, /* sort by file size */
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SORT_ATIME = 2 << 26, /* sort by last access time */
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SORT_CTIME = 3 << 26, /* sort by last change time */
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SORT_MTIME = 4 << 26, /* sort by last modification time */
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SORT_VERSION = 5 << 26, /* sort by version */
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SORT_EXT = 6 << 26, /* sort by file name extension */
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SORT_DIR = 7 << 26, /* sort by file or directory */
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SORT_MASK = (7 << 26) * ENABLE_FEATURE_LS_SORTFILES,
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LIST_SHORT = LIST_FILENAME,
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LIST_LONG = LIST_MODEBITS | LIST_NLINKS | LIST_ID_NAME | LIST_SIZE | \
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LIST_DATE_TIME | LIST_FILENAME | LIST_SYMLINK,
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SPLIT_DIR = 1,
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SPLIT_FILE = 0,
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SPLIT_SUBDIR = 2,
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};
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/* -Cadil1 Std options, busybox always supports */
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/* -gnsxA Std options, busybox always supports */
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/* -Q GNU option? busybox always supports */
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/* -Q GNU option, busybox always supports */
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/* -k SELinux option, busybox always supports (ignores if !SELinux) */
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/* Std has -k which means "show sizes in kbytes" */
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/* -FLRctur Std options, busybox optionally supports */
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/* -FLHRctur Std options, busybox optionally supports */
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/* -p Std option, busybox optionally supports */
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/* Not fully compatible - we show not only '/' but other chars too */
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/* -SXvhTw GNU options, busybox optionally supports */
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@ -199,15 +197,15 @@ SPLIT_SUBDIR = 2,
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/* Std opts we do not support: */
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/* -H Follow the links on command line only */
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static const char ls_options[] ALIGN1 =
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"Cadil1gnsxQAk" /* 13 opts, total 13 */
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"Cadil1gnsxQAk" /* 13 opts, total 13 */
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IF_FEATURE_LS_TIMESTAMPS("cetu") /* 4, 17 */
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IF_FEATURE_LS_SORTFILES("SXrv") /* 4, 21 */
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IF_FEATURE_LS_FILETYPES("Fp") /* 2, 23 */
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IF_FEATURE_LS_FOLLOWLINKS("L") /* 1, 24 */
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IF_FEATURE_LS_RECURSIVE("R") /* 1, 25 */
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IF_FEATURE_HUMAN_READABLE("h") /* 1, 26 */
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IF_SELINUX("KZ") /* 2, 28 */
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IF_FEATURE_AUTOWIDTH("T:w:") /* 2, 30 */
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IF_FEATURE_LS_RECURSIVE("R") /* 1, 24 */
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IF_SELINUX("KZ") /* 2, 26 */
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IF_FEATURE_LS_FOLLOWLINKS("LH") /* 2, 28 */
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IF_FEATURE_HUMAN_READABLE("h") /* 1, 29 */
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IF_FEATURE_AUTOWIDTH("T:w:") /* 2, 31 */
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;
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enum {
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//OPT_C = (1 << 0),
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@ -223,27 +221,55 @@ enum {
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OPT_Q = (1 << 10),
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//OPT_A = (1 << 11),
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//OPT_k = (1 << 12),
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OPTBIT_F = 13
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+ 4 * ENABLE_FEATURE_LS_TIMESTAMPS
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+ 4 * ENABLE_FEATURE_LS_SORTFILES,
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OPTBIT_color = OPTBIT_F
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+ 2 * ENABLE_FEATURE_LS_FILETYPES
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+ 1 * ENABLE_FEATURE_LS_FOLLOWLINKS
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+ 1 * ENABLE_FEATURE_LS_RECURSIVE
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+ 1 * ENABLE_FEATURE_HUMAN_READABLE
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+ 2 * ENABLE_SELINUX
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+ 2 * ENABLE_FEATURE_AUTOWIDTH,
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OPT_F = (1 << OPTBIT_F) * ENABLE_FEATURE_LS_FILETYPES,
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OPT_color = (1 << OPTBIT_color),
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OPTBIT_c = 13,
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OPTBIT_e,
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OPTBIT_t,
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OPTBIT_u,
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OPTBIT_S = OPTBIT_c + 4 * ENABLE_FEATURE_LS_TIMESTAMPS,
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OPTBIT_X, /* 18 */
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OPTBIT_r,
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OPTBIT_v,
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OPTBIT_F = OPTBIT_S + 4 * ENABLE_FEATURE_LS_SORTFILES,
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OPTBIT_p, /* 22 */
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OPTBIT_R = OPTBIT_F + 2 * ENABLE_FEATURE_LS_FILETYPES,
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OPTBIT_K = OPTBIT_R + 1 * ENABLE_FEATURE_LS_RECURSIVE,
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OPTBIT_Z, /* 25 */
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OPTBIT_L = OPTBIT_K + 2 * ENABLE_SELINUX,
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OPTBIT_H, /* 27 */
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OPTBIT_h = OPTBIT_L + 1 * ENABLE_FEATURE_LS_FOLLOWLINKS,
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OPTBIT_T = OPTBIT_h + 2 * ENABLE_FEATURE_HUMAN_READABLE,
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OPTBIT_w, /* 30 */
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OPTBIT_color = OPTBIT_T + 2 * ENABLE_FEATURE_AUTOWIDTH,
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OPT_c = (1 << OPTBIT_c) * ENABLE_FEATURE_LS_TIMESTAMPS,
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OPT_e = (1 << OPTBIT_e) * ENABLE_FEATURE_LS_TIMESTAMPS,
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OPT_t = (1 << OPTBIT_t) * ENABLE_FEATURE_LS_TIMESTAMPS,
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OPT_u = (1 << OPTBIT_u) * ENABLE_FEATURE_LS_TIMESTAMPS,
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OPT_S = (1 << OPTBIT_S) * ENABLE_FEATURE_LS_SORTFILES,
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OPT_X = (1 << OPTBIT_X) * ENABLE_FEATURE_LS_SORTFILES,
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OPT_r = (1 << OPTBIT_r) * ENABLE_FEATURE_LS_SORTFILES,
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OPT_v = (1 << OPTBIT_v) * ENABLE_FEATURE_LS_SORTFILES,
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OPT_F = (1 << OPTBIT_F) * ENABLE_FEATURE_LS_FILETYPES,
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OPT_p = (1 << OPTBIT_p) * ENABLE_FEATURE_LS_FILETYPES,
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OPT_R = (1 << OPTBIT_R) * ENABLE_FEATURE_LS_RECURSIVE,
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OPT_K = (1 << OPTBIT_K) * ENABLE_SELINUX,
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OPT_Z = (1 << OPTBIT_Z) * ENABLE_SELINUX,
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OPT_L = (1 << OPTBIT_L) * ENABLE_FEATURE_LS_FOLLOWLINKS,
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OPT_H = (1 << OPTBIT_H) * ENABLE_FEATURE_LS_FOLLOWLINKS,
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OPT_h = (1 << OPTBIT_h) * ENABLE_FEATURE_HUMAN_READABLE,
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OPT_T = (1 << OPTBIT_T) * ENABLE_FEATURE_AUTOWIDTH,
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OPT_w = (1 << OPTBIT_w) * ENABLE_FEATURE_AUTOWIDTH,
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OPT_color = (1 << OPTBIT_color) * ENABLE_FEATURE_LS_COLOR,
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};
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/* TODO: simple toggles may be stored as OPT_xxx bits instead */
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static const unsigned opt_flags[] = {
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static const uint32_t opt_flags[] = {
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LIST_SHORT | STYLE_COLUMNAR, /* C */
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DISP_HIDDEN | DISP_DOT, /* a */
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DISP_NOLIST, /* d */
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LIST_INO, /* i */
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LIST_LONG | STYLE_LONG, /* l - remember LS_DISP_HR in mask! */
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LIST_LONG | STYLE_LONG, /* l */
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LIST_SHORT | STYLE_SINGLE, /* 1 */
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0, /* g (don't show owner) - handled via OPT_g */
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LIST_ID_NUMERIC, /* n */
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@ -268,23 +294,15 @@ static const unsigned opt_flags[] = {
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LIST_FILETYPE | LIST_EXEC, /* F */
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LIST_FILETYPE, /* p */
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#endif
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#if ENABLE_FEATURE_LS_FOLLOWLINKS
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FOLLOW_LINKS, /* L */
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#endif
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#if ENABLE_FEATURE_LS_RECURSIVE
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DISP_RECURSIVE, /* R */
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#endif
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#if ENABLE_FEATURE_HUMAN_READABLE
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LS_DISP_HR, /* h */
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#endif
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#if ENABLE_SELINUX
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LIST_MODEBITS|LIST_NLINKS|LIST_CONTEXT|LIST_SIZE|LIST_DATE_TIME, /* K */
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LIST_MODEBITS|LIST_ID_NAME|LIST_CONTEXT, /* Z */
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#endif
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(1U<<31)
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/* options after Z are not processed through opt_flags:
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* T, w - ignored
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*/
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(1U << 31)
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/* options after Z are not processed through opt_flags */
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};
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@ -344,7 +362,7 @@ static struct dnode *my_stat(const char *fullname, const char *name, int force_f
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struct dnode *cur;
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IF_SELINUX(security_context_t sid = NULL;)
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if ((all_fmt & FOLLOW_LINKS) || force_follow) {
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if ((option_mask32 & OPT_L) || force_follow) {
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#if ENABLE_SELINUX
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if (is_selinux_enabled()) {
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getfilecon(fullname, &sid);
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@ -699,7 +717,7 @@ static NOINLINE unsigned list_single(const struct dnode *dn)
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(int) major(dn->dstat.st_rdev),
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(int) minor(dn->dstat.st_rdev));
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} else {
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if (all_fmt & LS_DISP_HR) {
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if (option_mask32 & OPT_h) {
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column += printf("%"HUMAN_READABLE_MAX_WIDTH_STR"s ",
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/* print st_size, show one fractional, use suffixes */
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make_human_readable_str(dn->dstat.st_size, 1, 0)
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@ -887,12 +905,6 @@ static void showdirs(struct dnode **dn, int first)
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struct dnode **subdnp;
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struct dnode **dnd;
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/* Never happens:
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if (dn == NULL || ndirs < 1) {
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return;
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}
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*/
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for (; *dn; dn++) {
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if (all_fmt & (DISP_DIRNAME | DISP_RECURSIVE)) {
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if (!first)
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@ -1031,8 +1043,7 @@ int ls_main(int argc UNUSED_PARAM, char **argv)
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init_unicode();
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all_fmt = LIST_SHORT |
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(ENABLE_FEATURE_LS_SORTFILES * (SORT_NAME | SORT_FORWARD));
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all_fmt = LIST_SHORT | (ENABLE_FEATURE_LS_SORTFILES * SORT_NAME);
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#if ENABLE_FEATURE_AUTOWIDTH
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/* obtain the terminal width */
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@ -1050,8 +1061,8 @@ int ls_main(int argc UNUSED_PARAM, char **argv)
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* in some pairs of opts, only last one takes effect:
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*/
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IF_FEATURE_LS_TIMESTAMPS(IF_FEATURE_LS_SORTFILES(":t-S:S-t")) /* time/size */
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// ":H-L:L-H:" - we don't have -H
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// ":m-l:l-m:" - we don't have -m
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// ":m-l:l-m" - we don't have -m
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IF_FEATURE_LS_FOLLOWLINKS(":H-L:L-H")
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":C-xl:x-Cl:l-xC" /* bycols/bylines/long */
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":C-1:1-C" /* bycols/oneline */
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":x-1:1-x" /* bylines/oneline (not in SuS, but in GNU coreutils 8.4) */
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@ -1062,9 +1073,9 @@ int ls_main(int argc UNUSED_PARAM, char **argv)
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IF_FEATURE_AUTOWIDTH(, NULL, &terminal_width)
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IF_FEATURE_LS_COLOR(, &color_opt)
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);
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for (i = 0; opt_flags[i] != (1U<<31); i++) {
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for (i = 0; opt_flags[i] != (1U << 31); i++) {
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if (opt & (1 << i)) {
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unsigned flags = opt_flags[i];
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uint32_t flags = opt_flags[i];
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if (flags & STYLE_MASK)
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all_fmt &= ~STYLE_MASK;
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@ -1134,9 +1145,11 @@ int ls_main(int argc UNUSED_PARAM, char **argv)
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dn = NULL;
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nfiles = 0;
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do {
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/* NB: follow links on command line unless -l, -s or -F */
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cur = my_stat(*argv, *argv,
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/* follow links on command line unless -l, -s or -F: */
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!((all_fmt & (STYLE_LONG|LIST_BLOCKS)) || (option_mask32 & OPT_F))
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/* ... or if -H: */
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|| (option_mask32 & OPT_H)
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);
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argv++;
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if (!cur)
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